12644260 has 24 divisors (see below), whose sum is σ = 28115640. Its totient is φ = 4760064.

The previous prime is 12644239. The next prime is 12644267. The reversal of 12644260 is 6244621.

12644260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5125696 + 7518564 = 2264^2 + 2742^2 .

It is not an unprimeable number, because it can be changed into a prime (12644267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18255 + ... + 18934.

It is an arithmetic number, because the mean of its divisors is an integer number (1171485).

Almost surely, 2^12644260 is an apocalyptic number.

12644260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12644260 is an abundant number, since it is smaller than the sum of its proper divisors (15471380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12644260 is a wasteful number, since it uses less digits than its factorization.

12644260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37215 (or 37213 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 12644260 is about 3555.8768257632. The cubic root of 12644260 is about 232.9688231539.

Adding to 12644260 its reverse (6244621), we get a palindrome (18888881).

The spelling of 12644260 in words is "twelve million, six hundred forty-four thousand, two hundred sixty".